I will be playing crysis 3, bf3 multi, far cry 3, and skyrim with mods at 1920 x 1080. will an sli of 670 be worth the money?? or should i just go with one?
If you are playing max out everything in crysis 3 then yeah, but it isn't really worth it if you were to play on single monitors and upgrade later on, with sli gtx 670 you can use it for a long time. So if you have the money, its worth it.
I say go with one 670. I have a ZOTAC 670 AMP! edition which is clocked higher than most 680s for a good price and i play all of those games maxed out on on 1920x1080.